Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 166 for “"bosons"”.
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Quantum computation with identical bosons
… quantum computing with identical noninteracting bosons, such as that in a linear optical system. We explore the challenges in building devices that implement this model and in certifying their correctness. In work done with Scott Aaronson, we introduce BOSONSAMPLING, a computational model of …
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CONFINED ULTRACOLD BOSONS IN ONE DIMENSIONAL OPTICAL LATTICES
… an intuitive model for strongly interacting bosons in one dimension. This model is then utilized to study the decay of the dipole oscillations of atomic ensembles subject to a small displacement of the parabolic potential. Good agreement is found with results of recent experiments. Chapters 5 …
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Vortex Configurations Of Bosons In Rotating Optical Lattices
Atomic clouds in a rotating optical lattice are at the intellectual intersection of several major paradigms of condensed matter physics. An optical lattice simulates the periodic potential ubiquitous in solid state physics, while rotation probes the superfluid character of these cold atomic gases …
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Properties of dirty bosons in disordered optical lattices
The study of the disordered Bose-Hubbard model is key to understanding the interplay of disorder and interactions. Despite many studies with uniform diagonal disorder, few have inquired into experimental realizations with an additional correlated off-diagonal disorder. The presence of a trap and …
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Dynamics of ultracold bosons in a disordered optical lattice
"This thesis presents research on a variety of dynamical phenomena in strongly correlated systems. We use 87Rb atoms trapped in a disordered optical lattice to realize the 3D Bose Hubbard model, with independently, dynamically tunable lattice depth and disorder strength. The equilibrium behavior of …
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Pair production of W bosons in electron positron annihilation
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1998.
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Bestimmung der Kopplungsstruktur des Higgs-Bosons mit dem Atlas-Detektor
… der Standard-Modell <br>Spin-Paritaet des Higgsbosons vorgestellt und analysiert. Dazu wird die Kopplung des Higgs an Vektorbosonen ausgenutzt, und Vorhersagen der Winkel- und Massenverteilungen der Zerfallsprodukte des Standard-Modells mit den Vorhersagen fuer alternative Kopplungen verglichen. …
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Precision Physics with W-bosons at the Large Hadron Collider
Weak bosons are by now a well-established and observed block of the elementary particles table, but the era of Precision Physics opens up new ways of utilising them in an attempt to uncover the mystery of physics beyond the Standard Model. Being central to what is called Electroweak Symmetry …
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Negative temperature states of bosons in triangular and kagome lattices
This thesis reports on experiments using ultracold bosonic ³⁹K atoms to study quantum many-body states in frustrated lattices. For the first time, we load the atoms into the optical triangular and kagome lattices at negative temperature, where most atoms occupy the states with the highest energy. …
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Ultracold bosons in optical lattices for quantum measurement and simulation
… lattice. For the first time, we have condensed bosons into the ground state of the Harper-Hofstadter Hamiltonian.
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Creating novel quantum states of ultracold bosons in optical lattices
Ultracold atoms in optical lattices are among the most developed platforms of interest for building quantum devices suitable for quantum simulation and quantum computation. Ultracold trapped atoms are advantageous because they are fundamentally indistinguishable qubits that can be prepared with …
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Upgrading particle identification and searching for leptophobic bosons at GlueX
MIT's contribution to the GLUEX project was the design and implementation of upgraded particle identification (PID) for the GLUEX strangeness program. The development of a Cherenkov detector known as a DIRC (Detection of Internally Reflected Cherenkov light) is presented. The design begins with a …
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Quantum Simulation of Spin-1 Physics with Bosons in Optical Lattice
Mott insulators of ultracold atoms in optical lattices are widely used as an experimental platform for simulating and studying many-body physics. A topic at the frontier of quantum simulation with Mott insulators is the study of quantum spin models, which are intimately connected to other modern …
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Quantum Dynamics of Strongly-Interacting Bosons in Optical Lattices with Disorder
… wall expansion dynamics of strongly interacting bosons in 2D optical lattices with disorder in a recent experiment {[}J.-y. Choi et al., Science 352, 1547 (2016)]. We show that Gutzwiller mean-field theory (GMFT) captures the main experimental observations, which are a result of the competition …
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Phases of bosons in optical lattices and coupled to artificial gauge fields
… first topic, in contrast with calculations of bosons in optical lattices that focus on the tight-binding regime, we note that the single-particle states of bosons in a periodic potential generally satisfy the Mathieu equation, and have developed a formalism for studying bosons in an optical …
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Phases and non-equilibrium dynamics of ultracold bosons in an optical quasicrystal
This thesis concerns the physics of ultracold bosons in quasicrystalline lattices, studied by means of quantum simulation using ultracold 39K atoms loaded to an eight-fold rotationally symmetric optical quasicrystal. Quasicrystalline and quasiperiodic systems, thanks to their long-range order and …
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Magnetic phases of large-spin ultracold bosons: quantum dimer models and spin liquid phases
… to studying QSLs and QDMs with ultracold bosons.</p>
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